      :output-to "samples/hello/out/hello.js"
      :source-map true})
 
-  ;; line 2 column 1
-  (mapped-line-and-column
-    (read-source-map "samples/hello/out/hello/core.js") 2 1)
-
-  ;; hello.core
-  (:ns (ns-info "samples/hello/out/hello/core.js"))
-
   (mapped-stacktrace
     [{:file "hello/core.js"
       :function "first"

      :line 2
      :column 1}]
    {:output-dir "samples/hello/out"})
  )

(defn- display-error

                          (if ns-info
                            source-file
                            (io/file rfile)))
                        (str (System/getProperty "user.dir") File/separator) "")
                url   (or (and ns-info (io/resource (util/ns->relpath ns)))
                          (io/resource file))]
            (merge
              {:function name'
               :file     (io/file file')
               :line     line'
               :column   column'}
              (when url
                {:url url}))))))))

(defn print-mapped-stacktrace
  "Given a vector representing the canonicalized JavaScript stacktrace
